President Barack Obama reached into his party's progressive past to deliver a robust endorsement of higher taxes for the wealthy, government intervention in the economy and an array of new benefits for lower- and middle-income Americans.

"Will we accept an economy where only a few of us do spectacularly well? Or will we commit ourselves to an economy that generates rising incomes and chances for everyone who makes the effort?" Obama said in a State of the Union address Tuesday night that at times sounded more like a party-rallying convention speech.

His direct appeal to taxing the rich and giving to the poor is a sign of just how mainstream populism has become at a time when 2016 presidential hopefuls, including Democrat Hillary Rodham Clinton and Republican Mitt Romney, are talking about how to help those left behind.